JPH0690514B2 - Image forming method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for forming an image using photosensitive microcapsules. More specifically, the present invention relates to an image forming method in which a silver halide and a polymerizable compound are used and development processing is performed by heat development and photodevelopment.

BACKGROUND OF THE INVENTION A light-sensitive material containing a silver halide, a polymerizable compound and a reducing agent is imagewise exposed to form a latent image on the silver halide, and the polymerizable compound is polymerized by heat development to form a polymer image. The forming method is disclosed in JP-A-61-69062 and 61-100746.
No. 61, No. 61-183640, No. 61-188535, No.
It is proposed in Japanese Patent Publication No. 61-228441. These are those in which a polymerization reaction occurs due to free radicals generated directly or indirectly from a reducing agent oxidized by thermal development.

Using a light-sensitive material containing the above photosensitive components in microcapsules, imagewise exposure is followed by heat development to cure the microcapsules by a polymerization reaction, and the color image-forming substance contained in the uncured capsules is pressed against the image-receiving material. An image forming method in which a color image is formed by transferring the image by the method described in JP-A-61-275742 is proposed. However, this method has a drawback that the heat development time required to sufficiently cure the microcapsules is long.

On the other hand, a silver halide, a polymerizable compound and a reducing agent are used, but the reducing agent has a function as a polymerization inhibitor, and when it is oxidized, it loses the function as a polymerization inhibitor. A method of forming a polymer image by exposure, post-heat development, and uniform exposure in the presence of a photopolymerization initiator (photodevelopment) is disclosed in JP-A-61-75342 (US Pat. No. 4,649,098).
No.)). However, this does not describe the embodiment in which the silver halide, the reducing agent and the color image-forming substance are encapsulated together with the polymerizable compound in microcapsules or oil droplets. When encapsulated in the same microcapsules or oil droplets, as will be described in detail later, the development rate of silver halide and, therefore, the rate at which the reducing agent that is a polymerization inhibitor is oxidized is also high. It was also found that the curing of oil droplets by photopolymerization is fast.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for forming a color image by using a small amount of silver halide with a photosensitivity close to that of an ordinary silver halide photographic light-sensitive material and only by a dry process. In particular, compared with the conventional method, it can be carried out by heat development in a shorter time or at a lower temperature, and therefore, an image forming method in which the total time required to obtain an image is shortened is obtained. To provide.

These objects are to function as a developing agent for silver halide, a polymerizable compound, a photopolymerization initiator, a color image-forming substance, and silver halide, and also as a polymerization inhibitor, and to serve as a silver halide. After developing and being oxidized by itself, microcapsules or oil droplets that together contain a reducing agent that loses or reduces its action as a polymerization inhibitor can be added to a photosensitive material provided on a support. This is imagewise exposed to form a latent image on silver halide, and then uniformly heated to develop the silver halide with a reducing agent and to oxidize the reducing agent in the area where the development has occurred. Then, at the same time or at the same time, by uniformly exposing with a light having a wavelength absorbed by the photopolymerization initiator, the polymerizable compound is photopolymerized in the portion where the development has occurred to cure the microcapsules or oil droplets, and To the image receiving material Close contact with pressurized by transferring the components in microcapsules or oil droplets uncured to the image receiving material, by connexion was achieved in the image forming method comprises forming a color image on the image receiving material.

[Effects of the Invention] According to the above method, an image can be formed by heat development for a shorter time than the conventional method and by simply performing uniform light exposure for a very short time and performing light development. Further, unlike the conventional method of polymerizing only by heat development, the developing process and the polymerization process of silver halide can be completely separated, and therefore, the image quality such as gradation of image and desimilation can be more freely set. Can be controlled.

DETAILED DESCRIPTION OF THE INVENTION The principle of the present invention, that is, the reason why the polymerization reaction imagewisely occurs (photodevelopment) in uniform exposure after heat development will be described.

When heated after imagewise exposure, the redox reaction (heat development) between the silver halide having a latent image formed and the reducing agent occurs, and the reducing agent is oxidized, while the reducing agent is not formed in the area where the latent image is not formed. It remains in the reaction. That is, an image of a polymerization-inhibiting reducing agent is formed. If you perform uniform exposure at this stage,
Free radicals are generated from the photopolymerization initiator over the entire surface of the photosensitive material, but polymerization due to the free radicals is imagewise prohibited. That is, in the remaining portion of the reducing agent, the radicals are trapped by the reducing agent and disappear according to the remaining amount. On the other hand, in the portion where the reducing agent is small, some of the radicals are extinguished by the reaction with the reducing agent, but most of them survive and add to the polymerizable compound (monomer) to cause the polymerization reaction. Therefore, polymerization occurs almost in inverse proportion to the remaining amount of the reducing agent, the microcapsules (or oil droplets) are hardened according to the polymerization rate, and when they are transferred to the image receiving material, a dye image is finally obtained.

The photo-developing conditions can be selected as follows. The light source is
Any material may be used as long as it has an emission spectrum including light having a wavelength that the photopolymerization initiator absorbs and decomposes. On the contrary, the photopolymerization initiator can be freely selected according to the spectrum of the light source. These are well known to those skilled in the art. The exposure amount may be adjusted by changing either the distance between the light-sensitive material and the light source or the exposure time. It is also possible to expose the photosensitive material under a light source while keeping the distance constant and through a slit. In this case, the exposure amount can be freely adjusted by changing the traveling speed and the slit width. The appropriate exposure amount can be determined by experiment. That is, the exposure amount of the uniform exposure is sufficient to cure the microcapsules or the oil droplets in the portion where the imagewise exposure amount is sufficiently high (highlight portion), and the microcapsules in the portion not imagewise exposed or Choose to be insufficient to cure the oil droplets.
If the exposure amount is too large, the amount of radicals generated exceeds the limit captured by the reducing agent, and polymerization occurs even in the undeveloped portion, and the maximum density of the dye image (hereinafter abbreviated as D (max)) decreases. Furthermore, the image is lost. On the other hand, if the exposure dose is too low, the silver halide developing part (the part where the reducing agent is absent) does not polymerize sufficiently, and the microcapsules (or oil droplets) are not sufficiently cured, and the minimum density of the dye image (below D
(Min) is too high.

Even without photodevelopment, a polymerization reaction may occur in the developed portion of the silver halide only by heat development. This is because the oxidant of the reducing agent directly or through the subsequent reaction, for example, the redox reaction with the second reducing agent to generate a free radical, whereby the polymerizable compound is polymerized.
However, in this case, the time required for the microcapsules or oil droplets to reach the polymerization rate required for sufficient curing is relatively long, whereas the process in which the silver halide is developed and the reducing agent is simultaneously oxidized is It was found to be a rather fast process rather than the rate-determining step in the whole reaction of.

The present invention takes out only the oxidation reaction of the reducing agent, which is a fast process, and the polymerization reaction is caused by a photochemical reaction in the subsequent uniform exposure process, so that the polymerization time is shorter than that in the case of polymerization by only thermal development. The heat development and uniform exposure for a short time can cure the microcapsules (or oil droplets), thus shortening the processing time as a whole.

The present invention does not necessarily require a material that is polymerized only by thermal development as described above, and a polymerization-reducing reducing agent is oxidized by the development reaction of a silver halide and a reducing agent to inhibit polymerization. It suffices if it is converted to a non-oxidized (or weak) oxidant, and all the polymerization reaction can be carried out by a photopolymerization initiator during the uniform exposure process. However, it is possible to use a material which can be polymerized only by heat development, and rather, it is preferable because polymerization occurs in both heat development and photodevelopment (uniform exposure) and the formation of the polymer is strengthened.

Incidentally, the oxidant of the reducing agent having no polymerization inhibiting property here does not necessarily have to be a temporary oxide directly formed by the oxidation of the reducing agent, and in some cases, a secondary product formed by further reaction. May have no polymerization inhibition property. What is important is that it is not the chemical species of the oxidant that the oxidation product of the type that exists stably between thermal development and photodevelopment should have no (or little) polymerization inhibition property. That is.

In addition, a latent image is formed on silver halide by imagewise exposure,
Since the exposure amount for that purpose is small, almost no photopolymerization occurs at this stage. Even if it is polymerized, it does not matter because it tends to enhance the image formation of the polymer by photodevelopment.

The light source used for light development is one that emits ultraviolet rays or visible light, and specific examples include mercury lamps, tungsten lamps, and
Examples include halogen lamps and xenon lamps.

The polymerizable compound containing silver halide or the like may be in the form of oil droplets, but it is more preferable to store them in microcapsules. This is because the microcapsules already have a certain level of mechanical strength, so the mechanical strength of the photosensitive material is excellent, and the polymerization rate required for curing by polymerization to make it non-transferable (non-destructive) is In addition, since the capsule wall generally has a property of hardly permeating oxygen in the air, it is possible to prevent a decrease in the polymerization rate due to the polymerization inhibiting effect of oxygen.

The photodevelopment may be performed after the heat development is completed and subsequently, but it is also possible to perform the photodevelopment simultaneously with the heat development.
In this case, however, it is preferable to start photodevelopment (uniform exposure) at the same time while heating after at least a certain degree of heat development has progressed to oxidize the reducing agent. By performing light development simultaneously with heat development, the processing time can be shortened and the photopolymerization rate can be increased.

Hereinafter, the silver halide, the reducing agent, the polymerizable compound, the photopolymerization initiator, the color image forming substance and the support, which constitute the light-sensitive material, will be sequentially described. The photosensitive material having the above structure will be simply referred to as "photosensitive material" hereinafter.

Photosensitive materials include silver chloride, silver bromide,
Any grain of silver iodide or silver chlorobromide, silver chloroiodide, silver iodobromide, and silver chloroiodobromide can be used.

The halogen composition of the silver halide grains may be uniform or non-uniform on the surface and inside. Regarding silver halide grains having a multiple structure having different compositions on the surface and in the inside, JP-A-57-154232, JP-A-58-108533, and JP-A-59-4875.
5, JP-A-59-52237, US Pat. No. 4433048, and European Patent No. 100984. Further, silver halide grains having a high ratio of silver iodide in the shell portion, such as the light-sensitive material described in Japanese Patent Application No. 61-25576, may be used.

There is also no particular limitation on the crystal habit of the silver halide grains. For example, tabular grains having an aspect ratio of 3 or more as in the light-sensitive material described in Japanese Patent Application No. 61-55509 may be used.

The silver halide grains described above are those disclosed in Japanese Patent Application No. 61-2145.
It is preferable to use silver halide grains having a relatively low fog value as in the light-sensitive material described in No. 80.

Two or more kinds of silver halide grains having different halogen compositions, crystal habits, grain sizes and the like can be used in combination with the silver halide used in the light-sensitive material.

The grain size distribution of silver halide grains is not particularly limited. For example, monodisperse silver halide grains having a substantially uniform grain size distribution may be used as in the light-sensitive material described in Japanese Patent Application No. 61-55508.

In the light-sensitive material, the average grain size of silver halide grains is preferably 0.001 to 5 μm, and more preferably 0.001 to 2 μm.

The amount of silver halide contained in the photosensitive layer is 0.1 mg to 10 g / m ^{2 in} terms of silver including an organic silver salt which is an optional component described later.
It is preferable to set it as the range. Further, in terms of silver equivalent of silver halide alone, it is preferably 0.1 g / m ² or less, 1 mg
It is particularly preferable that the amount is from 90 to 90 mg / m ² .

The photopolymerization initiator is described in, for example, “Chemical Revie” by Oster et al.
w "Vol. 68 (1968) pp. 125-151 and Kosar" Ligh
t-Sensitive Systems "(John Wiley & Sons. 1965) 15
A carbonyl compound (e.g., α-alkoxyphenyl ketones, polycyclic quinones, benzophenones and substituted benzophenones, xanthones, thioxanthones, benzoins) as described on pages 8 to 193, Halogen compounds (eg chlorosulfonyl and chloromethyl polynuclear aromatic compounds, chlorosulfonyl and chloromethyl heterocyclic compounds, chlorosulfonyl and chloromethyl benzophenones, and fluorenones), haloalkanes, α-halo-α- Phenylacetophenones, photoreducible dyes-reducing agents and redox couples), organic sulfur compounds, peroxides, optical semiconductors (eg titanium dioxide, zinc oxide, etc.), metal ions (eg (I) ions, Metal carbonyl, metal complex, uranyl salt, etc.), silver halide, Azo and diazo compounds,
A photo-reducing dye is used.

Specific examples of the photopolymerization initiator are given below.

2-dimethoxy-2-phenylacetitophenone, 2-
Methyl- [4- (methylthio) phenyl] -2-morpholino-1-propanone, 9,10-anthraquinone, benzophenone, phenanthrene quinosimilar ketone, 4,
4'-diethylaminobenzophenone, xanthone, chloroxanthone, thioxanthone, chlorothioxanthone, 2,4-diethylthioxanthone, chlorosulfonylthioxanthone, chlorosulfonylanthraquinone, chloromethylanthracene, chloromethylbenzothiazole, chlorosulfonylbenzoxazole, chloromethyl Quinoline, chloromethylbenzophenone, chlorosulfonylbenzophenone, fluorenone, carbon tetrabromide, benzoin butyl ether, benzoin isopropyl ether, 2,2'-bis (θ-chlorophenyl) -4,4 ', 5,5'
-Tetraphenyl biimidazole and 2-mercapto-5
A combination of -methylthio-1,3,4-thiadiazole and the like can be mentioned.

Further, a photopolymerization initiator using a photoreducible dye generally comprises a photoreducible dye and a hydrogen donating compound, and when a photoexcited dye and a hydrogen donating compound generate a radical capable of initiating polymerization. It is considered. Examples of the photo-reducing dye include methylene blue, thionine, rose bengal, erythrosin-B, eosin, rhodamine, phloxine-B, safranine, acriflavine, riboflavin, fluorescein, uranine, benzoflavin, N,
N, N ', N'-tetra-n-butylthionine, N, N, N', N '
-Tetramethyl-4'-dodecylsafranine, acridine orange, acridine yellow, carbonyl compounds such as 9,10-phenanthrenequinone, benzanthrone and the like can be mentioned. Examples of the hydrogen donating compound include β-diketones such as dimedone and acetylacetone, amines such as triethanolamine, diethanolamine, monoethanolamine, dimethylamine, diethylamine, tetramethylethylenediamine, triethylamine and phenylhydrazine, p-toluene. Sulfinic acids such as sulfinic acid, benzenesulfinic acid, p- (N-acetylamino) benzenesulfinic acid and salts thereof, N-
Examples thereof include phenylglycine, L-ascorbic acid, thiourea and allylthiourea. The molar ratio of the photoreducible dye to the hydrogen donating compound is 0.005 to 3 mol, more preferably 0.05 to 1 mol of the hydrogen donating compound.
Is in the range of to 1 mol.

Of these photopolymerization initiators, oil-soluble ones (for example, aromatic ketones) are preferably dissolved in a polymerizable compound and placed in microcapsules (or oil droplets). On the other hand, in the case of a water-soluble substance such as a photo-reducing dye, it can be placed in a continuous phase outside the microcapsules (for example, in a binder). Among the above photopolymerization initiators, aromatic ketones are preferably used in the present invention. The photopolymerization initiator may be used alone or in combination of two or more kinds.

In particular, in order to effectively utilize the energy of a light source used for uniform exposure in a wide emission spectrum range and to increase the photopolymerization rate, it is particularly preferable to use a proper combination of photopolymerization initiators having different absorption wavelengths. preferable.

The content of the photopolymerization initiator is 0.01 to 30% by weight of the polymerizable compound, and more preferably 0.1 to 10% by weight.

As described above, the reducing agent used in the present invention is a polymerization inhibitor, and when it is oxidized, it loses (or becomes smaller) the polymerization inhibition property. It is preferable to use a reducing agent having a large difference in polymerization inhibition property between the reducing agent and its oxidant. The selection of the reducing agent from this viewpoint can be performed by a simple test as described below. (Since it is difficult to measure the polymerization inhibition of the oxidant, select the reducing agent by measuring the polymerization inhibition of the reducing agent itself.) Reducing agent selection test: Trimethylolpropane triacrylate 10 g, dye A solution prepared by dissolving 1 g of a precursor (for example, described in Example 1) and 0.1 g of a photopolymerization initiator (for example, described in Example 1) is divided into two parts, and 0.5 g of a reducing agent to be tested is dissolved in one of them. The other (sample A) has no reducing agent added.
Each solution (designated as Sample B) is coated on a polyethylene terephthalate film. Both samples were exposed to the same light with an ultraviolet lamp (for example, the mercury lamp described in Example 1), and then an image receiving paper containing a developer (for example, the image receiving paper described in Example 1 or a commercially available non-carbon image receiving paper).
And adhere to and pressurize. If sufficient photopolymerization occurs (for example, through a suitable roller), the image-receiving paper will not develop color, but if polymerization is insufficient, it will develop color. The reflection optical density of the image receiving paper at this time is D1 for sample A and D2 for sample B. Adjust the UV exposure so that D2 is 0.1-0.3. A reducing agent having an optical density difference D1-D2 of 0.3 or more thus obtained is preferably used in the present invention. Particularly, 0.7 or more is preferable.

The dye precursor, the photopolymerization initiator, the ultraviolet lamp, and the image receiving paper described above may be arbitrary, as long as the relative photopolymerization rates of the two samples are known.

One or more reducing agents can be used in the present invention. As described above, it is necessary that the first reducing agent itself has a function as a polymerization inhibitor, and the oxidant thereof has no (or little) function as a polymerization inhibitor. However, the other reducing agents used in combination therewith do not necessarily have the above properties. These second and subsequent reducing agents are a development accelerator (that is, one having a function of promoting the oxidation of the first reducing agent by a silver halide having a latent image) or a polymerization initiator (that is, the first reducing agent). It has a function of generating a free radical by being oxidized by the oxidant of (1) and directly causing a polymerization reaction at the time of thermal development) together with the first reducing agent.

The reducing agents used in the present invention are shown below. Of these,
Many reducing agents have a function as a polymerization inhibitor, and the oxidation inhibition property of the oxidized form thereof is not or weak, but the difference in the polymerization inhibition property between the reduced form and the oxidized form is large. Examples of the reducing agent preferably used as the first reducing agent include aminophenols, sulfonamidephenols, sulfonamidenaphthols, 3-pyrazolidones and hydrazines.

The content of the reducing agent is such that the first reducing agent is in the range of 0.03-3 mol% of the silver halide, more preferably 0.1-1 mol%, and the other reducing agents are each of the silver halide.
The range of 0.01-10 mol% is preferred.

Examples of the reducing agent include hydroquinones, catechols, p-aminophenols, p-phenylenediamines, 3-pyrazolidones, 3-aminopyrazoles, and 4-amino-.
5-pyrazolones, 5-aminouracils, 4,5-dihydroxy-6-aminopyrimidines, reductones, aminoreductones, o- or p-sulfonamidophenols, o- or p-sulfonamidonaphthols, 2 -Sulfonamidoindanones, 4-sulfonamido-5-pyrazolones, 3-sulfonamidoindoles, sulfonamidopyrazolobenzimidazoles,
Examples include sulfonamide pyrazolotriazoles, α-sulfonamide ketones, and hydrazines.

Regarding various reducing agents having the above functions, see
61-183640 and 61-188535, and Japanese Patent Application No.
60-68874, 60-210657, 60-226084, 60
No. 227527, No. 60-227528, and No. 61-42746 are described (including those described as a developer or a hydrazine derivative). For the reducing agent, see T.Ja
"The Theory of the Photographic Process", 4th edition, by mes, pages 291-334 (1977), Research Disclosure magazine vol.170, Issue 17029, June 1978 (pages 9-15),
And Vol. 176, December 1978, No. 17643 (22-31
Page). Further, as in the light-sensitive material described in Japanese Patent Application No. 61-55505, a reducing agent precursor capable of releasing the reducing agent under heating conditions or in contact with a base is used instead of the reducing agent. Good. The reducing agent and the reducing agent precursor described in the above-mentioned respective specifications and references can be effectively used for the light-sensitive material in the present specification. Therefore, the “reducing agent” in the present specification includes the reducing agents and reducing agent precursors described in the above-mentioned publications, specifications and literatures.

These reducing agents may be used alone, or as described in each of the above specifications, two or more reducing agents may be mixed and used. When two or more reducing agents are used in combination, as the interaction of the reducing agents, firstly, promoting reduction of silver halide (and / or organic silver salt) by so-called superadditivity, Secondly, the polymerizable compound of the first reducing agent is oxidized through a redox reaction with another reducing agent in the presence of the oxidized product of the first reducing agent, which is generated by the reduction of silver halide (and / or organic silver salt). It is considered that the polymerization is caused (or the polymerization is suppressed) and the like. However, in actual use, it is difficult to specify which of the above actions because the above reactions can occur simultaneously.

Specific examples of the reducing agent include pentadecylhydroquinone, 5-t-butylcatechol, p- (N, N-diethylamino) phenol, 1-phenyl-4-methyl-4.
-Hydroxymethyl-3-pyrazolidone, 1-phenyl-4-methyl-4-heptadecylcarbonyloxymethyl-3-pyrazolidone, 2-phenylsulfonylamino-4-hexadecyloxy-5-t-octylphenol, 2- Phenylsulfonylamino-4-t-butyl-
5-hexadecyloxyphenol, 2- (N-butylcarbamoyl) -4-phenylsulfonylaminonaphthol, 2- (N-methyl-N-octadecylcarbamoyl) -4-sulfonylaminonaphthol, 1-acetyl-2-phenyl Enylhydrazine, 1-acetyl-2-{(p
Or o) -aminophenyl} hydrazine, 1-formyl-2-{(p or o) -aminophenyl} hydrazine, 1-acetyl-2-{(p or o) -methoxyphenyl} hydrazine, 1-lauroyl-2- {(P or o) -aminophenyl} hydrazine, 1-trityl-
2- (2,6-dichloro-4-cyanophenyl) hydrazine, 1-trityl-2-phenylhydrazine, 1-phenyl-2- (2,4,6-trichlorophenyl) hydrazine, 1- {2- ( 2,5-di-t-pentylphenoxy)
Butyroyl} -2-{(p or o) -aminophenyl} hydrazine, 1- {2- (2,5-di-t-pentylphenoxy) butyroyl} -2-{(p or o) -aminophenyl} hydrazine -Pentadecyl fluorocaprylate, 3-indazolinone, 1- (3,5-dichlorobenzoyl) -2-phenylhydrazine, 1-trityl-2-[{2-N-butyl-N-octylsulfamoyl) -4-methanesulfonyl} phenyl] hydrazine,
1- {4- (2,5-di-t-pentylphenoxy) butyroyl} -2-{(p or o) -methoxyphenyl}
Hydrazine, 1- (methoxycarbonylbenzohydryl) -2-phenylhydrazine, 1-formyl-2-
[4- {2- (2,4-di-t-pentylphenoxy) butyramide} phenyl] hydrazine, 1-acetyl-2
-[4- {2- (2,4-di-t-pentylphenoxy)
Butyramido} phenyl] hydrazine, 1-trityl-
2-[{2,6-dichloro-4- (N, N-di-2-ethylhexyl) carbamoyl} phenyl] hydrazine, 1-
(Methoxycarbonylbenzohydryl) -2- (2,4-
Dichlorophenyl) hydrazine, 1-trityl-2-
[{2- (N-ethyl-N-octylsulfamoyl)]
-4-Methanesulfonyl} phenyl] hydrazine, 1-
Benzoyl-2-tritylhydrazine, 1- (4-butoxybenzoyl) -2-tritylhydrazine, 1- (2,
4-dimethoxybenzoyl) -2-tritylhydrazine, 1- (4-dibutylcarbamoylbenzoyl) -2
-Tritylhydrazine, and 1- (1-naphthoyl)
-2-Trityl hydrazine etc. can be mentioned.

In the light-sensitive material, the reducing agent is preferably used in the range of 0.1 to 1500 mol% with respect to 1 mol of silver (including the above-described silver halide and an organic silver salt which is an optional component).

The polymerizable compound that can be used in the photosensitive material is not particularly limited, and known polymerizable compounds can be used. As a method of using the light-sensitive material, when a heat development process is planned, a high boiling point (for example, a boiling point of 80 ° C.) that is hard to volatilize during heating
It is preferable to use the above compounds). Further, in the embodiment in which the photosensitive layer contains a color image forming substance as an optional component described later, the color image forming substance is immobilized by polymerizing and curing the polymerizable compound. A crosslinkable compound having a polymerizable functional group is preferable. Further, as will be described later, when a transfer image is formed using an image receiving material, it is preferable to use a highly viscous substance as a polymerizable compound, like a photosensitive material described in Japanese Patent Application No. 61-150079. preferable.

The polymerizable compounds that can be used in the light-sensitive material are described in the application specifications for a series of light-sensitive materials described above and below.

The polymerizable compound used in the light-sensitive material is generally a compound having addition polymerization or ring-opening polymerization. The compound having an addition-polymerizable group includes a compound having an ethylenically unsaturated group, and the compound having a ring-opening polymerizable group includes a compound having an epoxy group. A compound having an ethylenically unsaturated group is particularly preferable.

Compounds having an ethylenically unsaturated group that can be used in the light-sensitive material include acrylic acid and salts thereof, acrylic acid esters, acrylamides, methacrylic acid and salts thereof, methacrylic acid esters, methacrylamides, maleic anhydride. Acids, maleic acid esters, itaconic acid esters, styrenes, vinyl ethers, vinyl esters, N-vinyl heterocycles, allyl ethers,
There are allyl esters and their derivatives.

Specific examples of the polymerizable compound that can be used in the light-sensitive material include acrylic acid esters such as n-butyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, benzyl acrylate, furfuryl acrylate, ethoxyethoxyethyl acrylate, dicyclohexyloxy. Ethyl acrylate, nonylphenyloxyethyl acrylate, hexanediol diacrylate, butanediol diacrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate,
Examples thereof include polyoxyethylenated bisphenol A diacrylate, hydroxypolyether polyacrylate, polyester acrylate, and polyurethane acrylate.

Other specific examples of methacrylic acid esters include methyl methacrylate, butyl methacrylate, ethylene glycol dimethacrylate, butanediol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropane trimethacrylate, pentaerythritol trimethacrylate, and pentaerythritol tetramethacrylate. Methacrylate and dimethacrylate of polyoxyalkylenated bisphenol A and the like can be mentioned.

The polymerizable compounds may be used alone or in combination of two or more. A light-sensitive material containing two or more polymerizable compounds in combination is described in Japanese Patent Application No. 61-55504. In addition, the above-mentioned reducing agent or a substance in which a polymerizable functional group such as a vinyl group or a vinylidene group is introduced into the chemical structure of the color image forming substance can also be used as the polymerizable compound. Needless to say, use of a substance that serves as both a reducing agent and a polymerizable compound or a color image forming substance and a polymerizable compound as described above is also included in the embodiment of the light-sensitive material.

In the light-sensitive material, the polymerizable compound is preferably used in the range of 50,000 to 120,000% by weight based on silver halide. A more preferred range of use is 12 to 12000% by weight.

The light-sensitive material comprises a support and a light-sensitive layer containing the components described above. The support is not particularly limited, but when heat development processing is planned as a method of using the light-sensitive material, it is preferable to use a material that can withstand the processing temperature of the development processing. Materials that can be used for the support include glass, paper, woodfree paper, coated paper, cast coated paper, synthetic paper, metal and its analogs, polyester, acetyl cellulose, cellulose ester, polyvinyl acetal, polystyrene, polycarbonate, polyethylene. Examples include films such as terephthalate, and paper laminated with a resin material or a polymer such as polyethylene.

When the support is made of a porous material such as paper, it has a certain smoothness according to a prescribed method by waviness like the support used in the photosensitive material described in Japanese Patent Application No. 61-52996. It is preferable to have Further, when a paper support is used, a paper support having a low water absorption like the light-sensitive material described in Japanese Patent Application No. 61-183050, Japanese Patent Application No. 61-191273.
A paper support having a certain flatness smoothness such as the light-sensitive material described in Japanese Patent Application No. 61-227766, and a paper support having a low shrinkage ratio such as the light-sensitive material described in Japanese Patent Application No. 227766/61, 227768
Paper support having low air permeability, such as the light-sensitive material described in Japanese Patent Application No. 61-243552,
It is also possible to use a paper support or the like having a pH value of 5 to 9.

Hereinafter, various aspects of the light-sensitive material, optional components that can be contained in the light-sensitive layer, auxiliary layers that can be optionally provided in the light-sensitive material, and the like will be sequentially described.

The oil droplets containing the polymerizable compound and the like are more preferably in the form of microcapsules. Various known techniques can be applied to the microcapsules without particular limitation. For an example of a light-sensitive material in which oil droplets of a polymerizable compound are in the form of microcapsules, see JP-A-61
-275742 publication.

There is no particular limitation on the wall material that constitutes the outer shell of the microcapsule. Regarding a photosensitive material using a microcapsule having an outer shell made of a polyamide resin and / or a polyester resin, Japanese Patent Application No. 61-53871 discloses a microcapsule having an outer shell made of a polyurea resin and / or a polyurethane resin. Japanese Patent Application No. 61-53872 for a photosensitive material using, and Japanese Patent Application No. 61-53873 for a photosensitive material using a microcapsule having an outer shell made of an amino-aldehyde resin.
Japanese Patent Application No. 61-53874 discloses a photosensitive material using microcapsules having an outer shell made of gelatin, and Japanese Patent Application No. 61-53875 discloses a photosensitive material using microcapsules having an outer shell made of an epoxy resin. Japanese Patent Application Laid-Open No. 2004-242242 discloses a photosensitive material using microcapsules having a composite resin shell containing a polyamide resin and a polyurea resin.
Japanese Patent Application No. 61-53878 describes photosensitive materials using microcapsules having a composite resin outer shell containing a polyurethane resin and a polyester resin.

When aldehyde-based microcapsules are used, it is preferable that the amount of residual aldehyde is not more than a certain value as in the light-sensitive material described in Japanese Patent Application No. 61-176415 by the present applicant.

When the silver halide is contained in the microcapsules, it is preferable that the silver halide be present in the wall material that constitutes the outer shell of the microcapsules. Regarding the light-sensitive material containing silver halide in the wall material of the microcapsule, Japanese Patent Application No. 61-
It is described in the specification of 11556.

Further, two or more microcapsules different in at least one of the components contained in the microcapsules such as silver halide, reducing agent, polymerizable compound, photopolymerization initiator and color image forming substance may be used in combination. In particular, in the case of forming a full-color image, it is preferable to use together three or more types of microcapsules in which the color hue of the color image forming substance contained is different. The light-sensitive material containing two or more kinds of microcapsules in combination is described in Japanese Patent Application No. 61-42747.

The average particle size of the microcapsules is preferably 0.5 to 50 μm, more preferably 3 to 20 μm. The distribution of the particle size of the microcapsules is preferably uniform over a certain value as in the light-sensitive material described in Japanese Patent Application No. 61-150080. The film thickness of the microcapsules is preferably within a certain range with respect to the particle diameter, as in the light-sensitive material described in Japanese Patent Application No. 61-227767.

When the silver halide is contained in the microcapsules, the average grain size of the silver halide grains described above is preferably 1/5 or less, and preferably 1/10 or less of the average size of the microcapsules. More preferable.
By setting the average grain size of the silver halide grains to one fifth or less of the average size of the microcapsules, it is possible to obtain a uniform and smooth image.

As optional components that can be contained in the photosensitive layer of the photosensitive material, sensitizing dyes, organic silver salts, various image forming accelerators (eg, bases, base precursors, oils, surfactants,
A compound having an antifoggant function and / or a development promoting function, a thermal solvent, a compound having an oxygen removing function, etc.), a thermal polymerization inhibitor, a development terminator, a fluorescent image whitening agent, an antifading agent,
Dyes or pigments for preventing halation or irradiation, pigments having the property of decolorizing by heating or light irradiation, matting agents, anti-smutage agents, plasticizers, water releasing agents, binders, solvents for polymerizable compounds, water-soluble vinyl polymers, etc. .

The color image-forming substance that can be used in the light-sensitive material is not particularly limited, and various types can be used. That is, a substance that is itself colored (dye or pigment), or energy that is colorless or pale but is external (heat, pressure, light irradiation, etc.) or another component (developing agent) A substance (color former) that develops a color upon contact is also included in the color image forming substance. Incidentally, the general light-sensitive material using a color image forming substance is described in the above-mentioned JP-A-61-73145. Further, Japanese Patent Application No. 61-29987 discloses a photosensitive material using a dye or pigment as a color image forming substance, and Japanese Patent Application No. 53876/1986 discloses a photosensitive material using a leuco dye.
JP-A No. 61-96339 for a photosensitive material using a triazene compound, and Japanese Patent Application Nos. 61-133091 and 61-133092 for a photosensitive material using a yellow color-forming leuco dye. The description of the light-sensitive material using a cyan color-forming leuco dye is described in Japanese Patent Application No. 61-197963.

Dyes and pigments, which are themselves colored substances, are commercially available as well as various documents (eg, "Handbook of Dyes" edited by the Society of Synthetic Organic Chemistry, published in 1970, "Handbook of Latest Pigments" edited by the Japan Pigment Technology Association, Known ones described in 1977 can be used. These dyes or pigments are used after being dissolved or dispersed.

On the other hand, examples of the substance that develops color by some energy such as heating, pressurization, light irradiation, etc., are thermochromic compounds,
Known are piezochromic compounds, photochromic compounds, and leuco bodies such as triarylmethane dyes, quinone dyes, indigoid dyes, and azine dyes. All of them develop color by heating, pressurizing, light irradiation or air oxidation.

Examples of the substance that develops a color upon contact with another component include various systems that develop a color by an acid-base reaction, a redox reaction, a coupling reaction, a chelate forming reaction, etc. between two or more components. For example, pressure-sensitive copying paper (pages 29-58), Azographie (pages 87-95), described in "Introduction to Special Paper Chemistry" by Hiroyuki Moriga (published in 1975).
Known color-developing systems such as thermosensitive color development (pages 118 to 120) due to chemical changes, or the proceedings of the seminar "Latest dye chemistry-Attractive utilization as a functional dye and new development-" sponsored by the Kinki Chemical Industry Association 26-32 Page, (June 19, 1980), the coloring system etc. which can be used. Specifically, a color-developing system consisting of a color-forming agent having a partial structure such as lactone, lactam, and spiropyran used for pressure-sensitive paper and an acidic substance (developing agent) such as acid clay and phenols; an aromatic diazonium salt or System utilizing azo coupling reaction of diazotate, diazosulfonates with naphthols, anilines, active methylenes; reaction of hexamethylenetetramine with ferric ion and gallic acid, and with phenolphthalein-complexons A chelate forming reaction such as a reaction with an alkaline earth metal ion; a redox reaction such as a reaction between ferric stearate and pyrogallol or a reaction between silver behenate and 4-methoxy-1-naphthol can be used.

When two types of substances that cause a color reaction in a contact state are used as the above-mentioned color image forming substances, one of the substances that cause the color reaction and the polymerizable compound are contained in microcapsules. Then, a color image can be formed on the photosensitive layer by allowing another substance among the substances that cause the above-mentioned color forming reaction to exist outside the microcapsules containing the polymerizable compound. A light-sensitive material capable of obtaining a color image without using an image receiving material as described above is described in Japanese Patent Application No. 61-53881.

The content of the color image-forming substance is in the range of 0.1 to 100% by weight of the polymerizable compound, more preferably 1 to 20% by weight.

The sensitizing dye that can be used in the light-sensitive material is not particularly limited, and a silver halide sensitizing dye known in the photographic art can be used. The sensitizing dye, methine dye, cyanine dye, merocyanine dye, complex cyanine dye, holopolar cyanine dye, hemicyanine dye,
Examples include styryl dyes and hemioxonol dyes. These sensitizing dyes may be used alone or in combination. Particularly, for the purpose of supersensitization, it is common to use a combination of sensitizing dyes. Further, together with the sensitizing dye, a dye which does not have a spectral sensitizing effect itself, or a substance which does not substantially absorb visible light but exhibits supersensitization may be used together. The addition amount of the sensitizing dye is generally about 10 ^{-8 to} 10 ^-2 mol per mol of silver halide.

The sensitizing dye is preferably added at the stage of preparing a silver halide emulsion described below. Regarding a light-sensitive material obtained by adding a sensitizing dye in the step of forming silver halide grains, JP-A-62-947 discloses a silver halide emulsion after the formation of silver halide grains. Regarding the light-sensitive material obtained by adding it at the preparation stage, Japanese Patent Application No.
Each is described in the specification of -55510. Further, regarding specific examples of sensitizing dyes that can be used in the light-sensitive material,
It is described in JP-A-62-947 and Japanese Patent Application No. 61-55510. Further, as in the light-sensitive material described in Japanese Patent Application No. 61-208786, an increasing dye for infrared photosensitivity may be used in combination.

Addition of an organic silver salt to a light-sensitive material is particularly effective in heat development processing. That is, when heated to a temperature of 80 ° C. or higher, the organic silver salt is considered to participate in the redox reaction using the latent image of silver halide as a catalyst. in this case,
It is preferable that the silver halide and the organic silver salt are in contact with or in close proximity to each other. As the organic compound that constitutes the organic silver salt, an aliphatic or aromatic carboxylic acid,
Examples thereof include thiocarbonyl group-containing compounds having a mercapto group or α-hydrogen, and imino group-containing compounds. Among them, benzotriazole is particularly preferable. The organic silver salt is generally a silver halide 1
It is used in an amount of 0.01 to 10 mol, preferably 0.01 to 1 mol, per mol. The same effect can be obtained by adding an organic compound (for example, benzotriazole) constituting the organic silver salt to the photosensitive layer instead of the organic silver salt. A light-sensitive material using an organic silver salt is described in JP-A-62-3246.

The above-mentioned radical generator which participates in the polymerization acceleration (or polymerization suppression) reaction of the reducing agent may be added to the photosensitive layer.
As the radical generator, Japanese Patent Application No. 61-38510 describes a light-sensitive material using triazene silver, and Japanese Patent Application No. 61-38511 describes a light-sensitive material using silver diazotate. The light-sensitive materials mentioned above are described in Japanese Patent Application No. 61-38512.

Various image formation accelerators can be used in the light-sensitive material. The image forming accelerator includes a silver halide (and / or an organic silver salt) and a reducing agent for promoting the redox reaction between the redox agent and the photosensitive material to the image receiving material or image receiving layer (these will be described later). It has the function of promoting the movement of image forming substances. The image formation accelerator is a base, a base precursor, an oil, a surfactant, a
It is further classified into a compound having an antifoggant function and / or a development promoting function, a hot solvent, a compound having an oxygen removing function, and the like. However, these substance groups generally have a composite function, and usually have some of the above-mentioned accelerating effects together. Therefore, the above classification is convenient, and in fact, one compound often has a plurality of functions.

Examples of image forming accelerators include bases, base precursors, oils, surfactants, compounds having an antifoggant function and / or development promoting function, thermal solvents, and compounds having an oxygen removing function.

Examples of preferable bases include alkali metal or alkaline earth metal hydroxides as inorganic bases; alkali metal or alkaline earth metal tertiary phosphates, borates,
Carbonates, metaborates; combinations of zinc hydroxide or zinc oxide with chelating agents such as sodium picolinate;
Ammonium hydroxides; quaternary alkyl ammonium hydroxides; hydroxides of other metals, and the like, and organic bases include aliphatic amines (trialkylamines,
Hydroxylamines, aliphatic polyamines); Aromatic amines (N-alkyl-substituted aromatic amines, N-hydroxylalkyl-substituted aromatic amines and bis [p-
(Dialkylamino) phenyl] methanes), heterocyclic amines, amidines, cyclic amidines, guanidines, cyclic guanidines, and the like, with a pKa of 7 or more being particularly preferable.

As the base precursor, a salt of an organic acid and a base that is decarboxylated by heating, a compound that releases amines by a reaction such as intramolecular nucleophilic substitution reaction, Rothsen rearrangement, Beckmann rearrangement, etc. Compounds that release and generate a base by electrolysis are preferably used. Specific examples of the base precursor include guanidine trichloroacetic acid, piperidine trichloroacetic acid, morpholine trichloroacetic acid, p-toluidine trichloroacetic acid, 2-picoline trichloroacetic acid, guanidine phenylsulfonylacetate guanidine, 4-chlorophenylsulfonylacetate guanidine, 4- Examples thereof include guanidine methyl-sulfonylphenylsulfonylacetate and guanidine 4-acetylaminomethylpropionate.

The base or base precursor can be used in a wide range of amount in the light-sensitive material of the present invention. The base or base precursor is 100% by weight in terms of weight of the photosensitive layer coating film.
It is suitably used below, and more preferably in the range of 0.1% by weight to 40% by weight. In the present invention, the base and / or base precursor may be used alone or as a mixture of two or more kinds.

A light-sensitive material using a base or a base precursor is described in Japanese Patent Application No. 60-227528. Further, regarding a light-sensitive material using a tertiary amine as a base or a base precursor, Japanese Patent Application No. 61-13181 discloses a fine particle dispersion of a hydrophobic organic base compound having a melting point of 80 to 180 ° C. Regarding the photosensitive material, Japanese Patent Application No. 61-52992
Japanese Patent Application No. 61-215637 discloses a light-sensitive material using a guanidine derivative having a solubility of 0.1% or less, and a light-sensitive material using a hydroxide or salt of an alkali metal or an alkaline earth metal. Are described in Japanese Patent Application No. 61-96341.

Further, Japanese Patent Application No. 61-167558 discloses a photosensitive material using an acetylide compound as a base precursor.
Japanese Patent Application No. 61-19 for a light-sensitive material containing acetylene carboxylate as a base precursor and further containing silver, copper, a silver compound or a copper compound as a catalyst for a base formation reaction.
Japanese Patent Application No. 61-227769 discloses a photosensitive material containing the above-mentioned acetylene carboxylic acid salt and the above silver, copper, a silver compound or a copper compound in a state of being isolated from each other, the above-mentioned acetylene carboxylic acid. Salt and above silver, copper,
Regarding a light-sensitive material containing a ligand in a free state in addition to a silver compound or a copper compound, Japanese Patent Application No. 61-243555 discloses that acetylene carboxylate is used as a base precursor, and a heat-melting compound is used as a base. Regarding the light-sensitive material containing a reaction accelerator for the formation reaction, Japanese Patent Application No. 61-191001 discloses a light-sensitive material containing a sulfonylacetate as a base precursor and further containing a heat-meltable compound as a reaction accelerator for the base formation reaction. Is Japanese Patent Application No. 61-193375, and Japanese Patent Application No. 61-167558 describes a photosensitive material using a compound in which an isocyanate or isothiocyanate is bound to an organic base as a base precursor.
Each has a description.

When a base or a base precursor is used in the light-sensitive material of the present invention, silver halide in the microcapsules described above,
It is preferred that a reducing agent, a polymerizable compound, a photopolymerization initiator and a color image forming substance are contained, and a base or a base precursor is present in the photosensitive layer outside the microcapsules. Alternatively, a base or a base precursor may be contained in another microcapsule, as in the light-sensitive material described in Japanese Patent Application No. 61-52988. In addition to the above specification, a light-sensitive material using a microcapsule containing a base or a base precursor is a light-sensitive material containing a base or a base precursor dissolved or dispersed in an aqueous solution of a water retention agent in a microcapsule. No. 52989 discloses a photosensitive material in which solid fine particles carrying a base or a base precursor are contained in microcapsules, and Japanese Patent Application No. 61-52995 describes a microphotograph containing a base compound having a melting point of 70 ° C. to 210 ° C. Light-sensitive materials using capsules are described in Japanese Patent Application No. 61-212149. Further, in place of the microcapsules containing the base or base precursor, particles containing a base or base precursor and a hydrophobic substance in a compatible state may be used as in the light-sensitive material described in Japanese Patent Application No. 61-243556. Good.

The base or base precursor is described in Japanese Patent Application No. 61-9634.
As described in No. 0 specification, it may be added to an auxiliary layer (a layer containing a base or a base precursor described later) other than the photosensitive layer. Further, as described in Japanese Patent Application No. 61-176417, the support described above may be made porous, and a base or a base precursor may be contained in this porous support.

As the oil, a high boiling point organic solvent used as a solvent for emulsifying and dispersing a hydrophobic compound can be used.

Examples of the surface active agent include polydinium salts, ammonium salts, phosphonium salts described in JP-A-59-74547 and polyalkylene oxides described in JP-A-59-57231.

The compound having an antifoggant function and / or a development promoting function can be used for the purpose of obtaining a clear image (image having a high S / N ratio) having a high maximum density and a low minimum density. Incidentally, regarding a photosensitive material using an antifoggant as a compound having an antifoggant function and / or a development promoting function, Japanese Patent Application No. 60-294337 discloses a photosensitive material using a compound having a cyclic amide structure. Japanese Patent Application No. 60-294338, Japanese Patent Application No. 60-294339 for a photosensitive material using a thioether compound, Japanese Patent Application No. 60-294340 for a photosensitive material using a polyethylene glycol derivative. In Japanese Patent Application No. 60-294341 for a photosensitive material using a thiol derivative and in Japanese Patent Application No. 20438/1986 for a photosensitive material using an acetylene compound, a photosensitive material using a sulfonamide derivative. Japanese Patent Application No. 61-25578, and Japanese Patent Application No. 61-25578 for a photosensitive material using a quaternary ammonium salt.
-238871 describes each.

As the hot solvent, a compound which can be a solvent for the reducing agent, a compound which is a substance having a high dielectric constant and is known to accelerate the physical development of the silver salt, and the like are useful. As a useful thermal solvent,
Polyethylene glycols of U.S. Patent No. 3347675 Pat described derivatives such as oleic acid esters of polyethylene oxide, beeswax, glycerol monostearate, SO ₂ - high dielectric constant compounds having and / or -CO- groups, U.S. Patent No. 3,667,959 1,10-decanediol, methyl anisate and biphenyl suberate described in Research Disclosure, December 1976, pages 26 to 28 are preferably used. The light-sensitive material using a heat solvent is described in JP-A-62-86355.

The compound having a function of removing oxygen can be used for the purpose of eliminating the influence of oxygen during development (oxygen has a polymerization inhibiting action). Examples of the compound having an oxygen removing function include compounds having two or more mercapto groups. Regarding the photosensitive material using a compound having two or more mercapto groups, Japanese Patent Application No.
It is described in the specification of 61-53880.

A development terminator that can be used in a light-sensitive material is a compound that interacts with a compound or silver and a silver salt that immediately neutralizes or reacts with a base to reduce the concentration of the base in the film to stop development after proper development. Is a compound that suppresses development. Specific examples thereof include an acid precursor that releases an acid when heated, an electrophilic compound that causes a substitution reaction with a coexisting base when heated, a nitrogen-containing heterocyclic compound, and a mercapto compound. Examples of acid precursors include JP-A-60-1088.
Examples thereof include oxime esters described in JP-A Nos. 37 and 60-192939, and compounds that release an acid by the Rotssen rearrangement described in JP-A-60-230133. Also,
Examples of electrophilic compounds that undergo a substitution reaction with a base upon heating include the compounds described in JP-A-60-230134.

Dyes or pigments may be added to the photosensitive layer of the photosensitive material for the purpose of preventing halation or irradiation. Incidentally, Japanese Patent Application No. 61-174402 describes a light-sensitive material in which a white pigment is added to a light-sensitive layer for the purpose of preventing halation or irradiation.

When the light-sensitive layer of the light-sensitive material is a mode in which the above-mentioned microcapsules are used, the microcapsules may contain a dye having a property of being decolorized by heating or light irradiation. The dye having the property of being decolorized by heating or irradiation with light can function as a dye equivalent to a yellow filter in a conventional silver salt photographic system. Regarding the light-sensitive material using the dye having the property of being decolorized by heating or light irradiation as described above, Japanese Patent Application No.
It is described in the specification of -243551.

As the anti-stripe agent used for the light-sensitive material, a particulate matter which is solid at room temperature is preferable. As a specific example, British Patent No. 12
322347 starch particles, US Pat. No. 362573
Polymer fine powder described in 6, etc., microcapsule particles not containing a color forming agent described in British Patent No. 1235991, etc., cellulose fine powder described in US 2711375, talc, kaolin, bentonite, Examples include inorganic particles such as pyrophyllite, zinc oxide, titanium oxide, and alumina. The average particle size of the above particles is preferably in the range of 3 to 50 μm in volume average diameter, and 5 to 40 μm.
The range of m is more preferable. As described above, when the oil droplets of the polymerizable compound are in the microcapsule state, it is more effective that the particles are larger than the microcapsules.

The binder that can be used in the light-sensitive material and the image-receiving material described later can be contained in the light-sensitive layer or the image-receiving layer (described later) alone or in combination. It is preferable to mainly use a hydrophilic binder. As the hydrophilic binder, a transparent or translucent hydrophilic binder is typical, and examples thereof include gelatin, gelatin derivatives,
It includes natural substances such as cellulose derivatives, starch, gum arabic and the like, and synthetic polymer substances such as water-soluble polyvinyl compounds such as polyvinyl alcohol, polyvinylpyrrolidone and acrylamide polymers. Other synthetic polymeric materials include dispersed vinyl compounds in the form of latices, which particularly increase the dimensional stability of photographic materials. The light-sensitive material using a binder is described in JP-A-61-69062. Further, regarding a light-sensitive material using a binder together with microcapsules, Japanese Patent Application No. 61-52994
It is described in the specification.

When a solvent for a polymerizable compound is used in the light-sensitive material, it is preferably used by enclosing it in a microcapsule different from the microcapsule containing the polymerizable compound. A photosensitive material using an organic solvent miscible with a polymerizable compound encapsulated in microcapsules is described in Japanese Patent Application No. 61-52993.

A water-soluble vinyl polymer may be adsorbed on the above-described silver halide grains for use. A light-sensitive material using a water-soluble vinyl polymer as described above is described in Japanese Patent Application No. 61-238870.

Examples of optional components that can be contained in the photosensitive layer other than those described above and the usage thereof are also described in the application specifications for the series of photosensitive materials described above, and Research Disclosure magazine vol. 170, 1978. It is described in June 17029 (pages 9 to 15).

The photosensitive layer of the photosensitive material containing the components described above preferably has a pH value of 7 or less as in the photosensitive material described in Japanese Patent Application No. 61-104226.

Examples of layers that can be optionally provided in the light-sensitive material include an image receiving layer, a heating element layer, an antistatic layer, an anti-curl layer, a peeling layer,
Examples thereof include a cover sheet or a protective layer, a layer containing a base or a base precursor, a base barrier layer, an anti-halation layer (colored layer) and the like.

Instead of using an image receiving material described later as a method of using the photosensitive material, the image receiving layer may be provided on the photosensitive material and an image may be formed on this layer. The image receiving layer provided on the photosensitive material may have the same structure as the image receiving layer provided on the image receiving material. Details of the image receiving layer will be described later.

For the light-sensitive material using the heating element layer, see Japanese Patent Laid-Open No. 61-
Japanese Patent Application No. 61-55507 for a photosensitive material provided with a cover sheet or a protective layer, and Japanese Patent Application No. 61-96340 for a photosensitive material provided with a layer containing a base or a base precursor. Japanese Patent Application No. 61-24 / 1999 for a light-sensitive material provided with a coloring layer as an anti-halation layer.
6901 specification, respectively. Further, regarding a light-sensitive material provided with a base barrier layer, the above-mentioned Japanese Patent Application No.
-96340 specification. Furthermore, examples of other auxiliary layers and their usages are also described in the specification of the above-mentioned series of photosensitive materials.

The method for producing the photosensitive material will be described below.

Although various methods can be used as a method for producing a light-sensitive material, a general production method is to prepare a coating solution by dissolving, emulsifying or dispersing the components of the photosensitive layer in an appropriate solvent, and applying the solution. It comprises a step of obtaining a light-sensitive material by applying the liquid to the support as described above and drying.

Generally, each coating solution is prepared by preparing a liquid composition containing each component for each component, and then mixing each liquid composition. The liquid composition may be prepared for each component, or may be prepared to contain a plurality of components. A part of the components of the photosensitive layer may be added and used at the stage of preparing the liquid composition or the coating solution or after the preparation. Furthermore, as described below, an oily (or aqueous) composition containing one or more components is
Further, a method of preparing a secondary composition by emulsifying in an aqueous (or oily) solvent can also be used.

With respect to the main components contained in the photosensitive layer, a method for preparing a liquid composition and a coating liquid is shown below.

In the production of a light-sensitive material, silver halide is preferably prepared as a silver halide emulsion. There are various methods known in the photographic art for the preparation of silver halide emulsions,
There are no particular restrictions on the production of the photosensitive material. The silver halide emulsion can be prepared by any of the acidic method, the neutral method and the ammonia method. As the reaction mode of the soluble silver salt and the soluble halogen salt, a one-sided mixing method,
Either a double jet method or a combination thereof may be used. Back mixing method and pAg for mixing particles under conditions of excess silver ion
A controlled double-jet method that keeps the constant can also be adopted. Further, the silver halide emulsion may be either a surface latent image type in which a latent image is mainly formed on the grain surface or an internal latent image type in which a latent image is formed inside the grain. A direct reversal emulsion in which an internal latent image type emulsion and a nucleating agent are combined can also be used.

In the preparation of a silver halide emulsion used for producing a light-sensitive material, a hydrophilic colloid (eg gelatin) can be used as a protective colloid. Further, a water-soluble vinyl polymer may be added to the silver halide emulsion in place of or in combination with gelatin. A light-sensitive material in which a water-soluble vinyl polymer compound is in contact with silver halide grains is described in Japanese Patent Application No. 61-238870.

The silver halide emulsion contains ammonia, an organic thioether derivative (see JP-B-47-386) and a sulfur-containing compound (see JP-A-53-144319) as a silver halide solvent in the step of forming silver halide grains. Etc. can be used. Further, in the process of grain formation or physical ripening, a cadmium salt, a zinc salt, a lead salt, a thallium salt or the like may be allowed to coexist. Further, for the purpose of improving the high illuminance failure and the low illuminance failure, a water-soluble iridium salt such as iridium chloride (III valence or IV valence), hexachloroiridium ammonium salt, or a water-soluble rhodium salt such as rhodium chloride can be used.

Soluble salts may be removed from the silver halide emulsion after formation of a precipitate or after physical ripening. In this case, it can be carried out according to the Nudel washing method or the sedimentation method. The silver halide emulsion may be used without ripening, but it is usually chemically sensitized before use. In the emulsion for a conventional type photosensitive material, known sulfur sensitizing method, reduction sensitizing method, noble metal sensitizing method and the like can be used alone or in combination.

When a sensitizing dye is added to the silver halide emulsion,
It is preferably added at the stage of preparing a silver halide emulsion as in the light-sensitive materials described in JP-A-62-947 and Japanese Patent Application No. 61-55510. When a nitrogen-containing heterocyclic compound is added as the compound having the fog-preventing function and / or the development-accelerating function, it should be added in the step of forming silver halide grains or the step of ripening in the preparation of a silver halide emulsion. Is preferred.
The method for producing a light-sensitive material in which a nitrogen-containing heterocyclic compound is added at the stage of forming silver halide grains or at the stage of ripening is described in Japanese Patent Application No. 61-3024.

When the above-mentioned organic silver salt is contained in the photosensitive layer, the organic silver salt emulsion can be prepared by a method similar to the method for preparing the silver halide emulsion.

In the production of a light-sensitive material, the polymerizable compound can be used as a medium for preparing the composition of other components in the light-sensitive layer. For example, a silver halide (including a silver halide emulsion), a reducing agent, a color image-forming substance and the like can be dissolved, emulsified or dispersed in a polymerizable compound and used for producing a light-sensitive material. In particular, when a color image forming substance is added, it is preferable to include it in the polymerizable compound. Further, as described later, when oil droplets of the polymerizable compound are microencapsulated, components such as wall material necessary for microencapsulation may be included in the polymerizable compound.

The photosensitive composition containing a polymerizable compound containing silver halide can be prepared using a silver halide emulsion.
In addition to the silver halide emulsion, a silver halide powder prepared by freeze-drying or the like can be used for the preparation of the photosensitive composition. The photosensitive composition containing these silver halides can be obtained by stirring with a homogenizer, blender, mixer, or other commonly used stirrer.

In addition, in the polymerizable compound used for preparing the photosensitive composition, it is preferable to dissolve a copolymer composed of a hydrophilic repeating unit and a hydrophobic repeating unit. Japanese Patent Application No. 60-
It is described in the specification of 261887.

Further, instead of using the above copolymer, microcapsules containing a silver halide emulsion as a core substance may be dispersed in a polymerizable compound to prepare a photosensitive composition. The photosensitive composition containing the microcapsules containing the silver halide emulsion as a core substance is described in Japanese Patent Application No. 61-5750.

The polymerizable compound (including those containing other constituents such as the above-mentioned photosensitive composition) is preferably used as an emulsion emulsified in an aqueous solvent. In addition, JP-A-61-
When the oil droplets of the polymerizable compound are microencapsulated like the light-sensitive material described in 275742, the wall material necessary for microencapsulation is added to this emulsion, and the outer shell of the microcapsule is further added. The forming treatment can also be carried out at this emulsion stage. Further, a reducing agent or any other component may be added at the stage of the above emulsion.

As an example of the above microencapsulation method, US Pat.
No. 2800457 and No. 2800458 A method utilizing coacervation of a hydrophilic wall forming material described in each specification; US Pat. No. 3287154 and British Patent 990443, and Japanese Patent Publication No. 38-19574. 42-446 and 42-771
U.S. Pat. No. 3,418,250 and U.S. Pat. No. 3,660,304. Method by precipitation of polymer; U.S. Pat. No. 3,796,669; Method using isocyanate-polyol wall material; U.S. Pat. No. 391451
A method using the isocyanate wall material described in No. 1 specification;
U.S. Patent Nos. 4001140, 4087376 and 408980
No. 2 Method using a urea-formaldehyde-based or urea-formaldehyde-resilicinol-based wall forming material; Method using a wall forming material such as melamine-formaldehyde resin and hydroxypropyl cellulose described in US Pat. No. 4025455 In situ method by polymerization of monomers described in JP-B-36-9168 and JP-A-51-9079; polymerization dispersion cooling method described in British Patent Nos. 927807 and 965074; U.S. Pat. The spray drying method described in each of 3111407 and British Patent No. 930422 can be mentioned. The method of microencapsulating the oil droplets of the polymerizable compound is not limited to the above, but a method of forming a polymer film as a microcapsule wall after emulsifying the core substance is particularly preferable.

The photosensitive microcapsules that can be used in the production of the light-sensitive material are described in Japanese Patent Application Nos. 61-11556 and 61-1.
1557, 61-53871, 61-53872, 61-53873
No. 61-53874, No. 61-53875, No. 61-53877,
No. 61-53878 is described in each specification.

When the polymerizable compound is a photosensitive composition containing silver halide in the emulsion of the polymerizable compound (including the microcapsule liquid subjected to the microencapsulation treatment) described above, the coating liquid for the photosensitive material is used as it is. Can be used as Emulsions other than the above can be mixed with the composition of other components such as a silver halide emulsion and optionally an organic silver salt emulsion to prepare a coating solution. Other components may be added at the stage of this coating solution as in the case of the above emulsion.

A photosensitive material is manufactured by coating the support with the coating solution for the photosensitive layer prepared as described above and drying. The coating of the coating liquid on the support can be easily carried out according to known techniques.

The method of using the photosensitive material will be described below.

The light-sensitive material may be imagewise exposed at the same time or after imagewise exposure.
It is used after development processing.

Although various exposing means can be used as the exposing method, a latent image of silver halide is generally obtained by imagewise exposure of radiation including visible light. The type of light source and the amount of exposure are
Sensitive wavelength of silver halide (when dye sensitization is performed,
It can be selected according to the sensitized wavelength) and the sensitivity. The original image may be a monochrome image or a color image.

The photosensitive material is subjected to development processing simultaneously with the imagewise exposure or after the imagewise exposure. The light-sensitive material may be subjected to development processing using a developing solution described in JP-B-45-11149. In addition, as described above, the heat development treatment is performed in Japanese Patent Laid-Open No.
The method described in Japanese Patent No. 69062 has a merit that the operation is simple and the treatment can be performed in a short time because it is a dry treatment. Therefore, the latter is particularly excellent in the development processing of the photosensitive material.

As a heating method in the heat development treatment, various conventionally known methods can be used. Further, like the light-sensitive material described in JP-A-61-294434, the light-sensitive material may be provided with a heating element layer and used as a heating means. Further, as in the image forming method described in Japanese Patent Application No. 61-55506, the heat development treatment may be carried out while suppressing the amount of oxygen present in the photosensitive layer. Heating temperature is generally 80 ℃ to 20
The temperature is 0 ° C, preferably 100 ° C to 160 ° C. The heating time is generally 1 second or longer, preferably 1 second to 5 minutes, and particularly preferably 5 seconds to 1 minute.

Instead of incorporating the above-mentioned base or base precursor into the light-sensitive material, development processing may be carried out while adding the base or base precursor to the light-sensitive layer or immediately after the addition. As a method for adding a base or a base precursor, a method using a sheet containing a base or a base precursor (base sheet) is the easiest and preferable. An image forming method using the above-mentioned base sheet is described in Japanese Patent Application No. 61-176417.

The light-sensitive material is subjected to heat development processing as described above and further photodevelopment as described above.

As described above, the photosensitive material can obtain a polymer image on the photosensitive amount. Further, a dye or a pigment may be fixed to the polymer to obtain a dye image.

When the light-sensitive material is constituted like the light-sensitive material described in the above-mentioned Japanese Patent Application No. 61-53881, the light-sensitive material subjected to the developing treatment is pressed to destroy the microcapsules and cause a color-forming reaction. A color image can be formed on a light-sensitive material by bringing two kinds of substances into contact with each other.

Further, the image receiving material can be used to form an image on the image receiving material.

The image receiving material will be described below. For general image forming methods using an image receiving material or image receiving layer, see
It is described in JP 61-278849.

As the support for the image receiving material, in addition to the support that can be used for the light-sensitive material described above, variator paper can be used. When a porous material such as paper is used as the support of the image receiving material, it is preferable that the image receiving material has a certain smoothness like the image receiving material described in Japanese Patent Application No. 61-52990. . The image receiving material using a transparent support is described in Japanese Patent Application No. 61-52991.

The image receiving material generally has an image receiving layer provided on a support. The image receiving layer is in accordance with the coloring system of the color image forming substance described above,
Various compounds can be used to make up any form. When a polymer image is formed on an image receiving material, a dye or a pigment is used as a color image forming substance, the image receiving material may be composed of only the above support.

For example, when a color-developing system comprising a color-developing agent and a color-developing agent is used, the image-receiving layer may contain the color-developing agent. Further, the image receiving layer may be formed as at least one layer containing a mordant. The mordant can be selected from compounds known in the photographic art and the like in consideration of conditions such as the type of color image forming substance and used. If necessary, a plurality of mordants having different mordant powers may be used to form two or more image receiving layers.

The image receiving layer preferably contains a polymer as a binder. As the binder, the binder that can be used in the photosensitive layer of the photosensitive material described above can be used. Further, a polymer having low oxygen permeability may be used as a binder as in the image receiving material described in Japanese Patent Application No. 61-53879.

The image receiving layer may contain a thermoplastic compound. When the image receiving layer contains a thermoplastic compound, it is preferable that the image receiving layer itself is formed as an aggregate of thermoplastic compound fine particles. The image-receiving layer having the above-described structure has an advantage that a transfer image can be easily formed and a glossy image can be obtained by heating after the image formation. The thermoplastic compound is not particularly limited and may be arbitrarily selected from known plastic resins (plastics) and waxes and used. However, the glass transition point of the thermoplastic resin and the melting point of the wax are preferably 200 ° C. or lower. Regarding the image-receiving material having an image-receiving layer containing the above-mentioned thermoplastic compound fine particles, Japanese Patent Application No. 61-124952 is available.
No. 61-124953 are described in each specification.

The image receiving layer may contain a photopolymerization initiator or a thermal polymerization initiator. In image formation using an image receiving material,
The color image forming substance is transferred together with the unpolymerized polymerizable compound as described later. Therefore, a photopolymerization initiator or a thermal polymerization initiator can be added to the image-receiving layer for the purpose of smoothly proceeding the curing treatment (fixing treatment) of the unpolymerized polymerizable compound. An image receiving material having an image receiving layer containing a photopolymerization initiator is disclosed in Japanese Patent Application No. Sho 61-3025, and an image receiving material having an image receiving layer containing a thermal polymerization initiator is used in Japanese Patent Application No. 61-3025.
-55502 specification has description.

The dye or pigment may be contained in the image receiving layer for the purpose of writing characters, symbols, frames, etc. on the image receiving layer or for the purpose of making the background of the image a specific color. Further, a dye or a pigment may be included in the image receiving layer for the purpose of facilitating the front / back discrimination of the image receiving material. As the dye or pigment, various known substances including dyes or pigments that can be used in image formation can be used, but the dye or pigment may impair the image formed in the image receiving layer. In some cases, it is preferable to lower the dyeing density of the dye or pigment (for example, the reflection density is 1 or less), or to use the dye or pigment having the property of being decolorized by heating or light irradiation.
An image receiving material having an image receiving layer containing a dye or pigment having a property of being decolorized by heating or light irradiation is described in Japanese Patent Application No. 61-96339.

Further, when a white pigment such as titanium dioxide or barium sulfate is added to the image receiving layer, the image receiving layer can function as a white reflective layer. When the image receiving layer functions as a white reflective layer, the white pigment is 10 g to 1 g per 1 g of the thermoplastic compound.
It is preferably used in the range of 00 g.

When the dye or pigment as described above is contained in the image receiving layer, it may be uniformly contained or may be partially distributed. For example, a support described below is made of a material having a light-transmitting property, and a part of the reflection image can be a projection image by including the white pigment in a part of the image receiving layer. By doing so, unnecessary image information in the projected image can be written as a reflected image in the image receiving layer portion containing the white pigment.

The image receiving layer may be composed of two or more layers depending on the functions as described above. The thickness of the image receiving layer is 1 to 10
The thickness is preferably 0 μm, more preferably 1 to 20 μm.

A protective layer may be further provided on the image receiving layer. Further, a layer made of an aggregate of fine particles of a thermoplastic compound may be further provided on the image receiving layer. An image-receiving material in which a layer composed of an aggregate of fine particles of a thermoplastic compound is further provided on the image-receiving layer is described in Japanese Patent Application No. 61-55503.

Further, a layer containing an adhesive or an adhesive and release paper may be sequentially laminated on the surface of the support opposite to the surface on which the image receiving layer is provided. The sticker image-receiving material having the above structure is described in the specification of Japanese Patent Application No. 61-1692464 filed by the present applicant.

When the color image forming substance is a dye or a pigment, plain paper can be used as the image receiving material.

The photosensitive material is subjected to development processing as described above, and by pressing the image receiving material in a state of being superposed, the unpolymerized polymerizable compound is transferred to the image receiving material, and a polymer image can be obtained on the image receiving material. it can. Regarding the pressing means,
Various conventionally known methods can be used.

Further, in the embodiment in which the photosensitive layer contains a color image-forming substance,
By carrying out a developing treatment in the same manner, the polymerizable compound is polymerized and cured, and thereby the color image forming substance in the cured portion is immobilized. Then, by pressing the photosensitive material and the image receiving material in a superposed state, the color image forming substance in the uncured portion is transferred to the image receiving material, and a color image can be obtained on the image receiving material.

After forming an image on the image receiving material as described above, as in the image forming method described in Japanese Patent Application No. 61-55501,
The image receiving material may be heated. The above method also has an advantage that the unpolymerized polymerizable compound transferred onto the image receiving material is polymerized and the storability of the obtained image is improved.

Photosensitive materials include black-and-white or color imaging and printing sensitive materials, printing sensitive materials, printing plates, X-ray sensitive materials, medical sensitive materials (for example, ultrasonic diagnostic CRT imaging sensitive materials), computer graphic hard copy sensitive materials. There are many applications such as sensitive materials for copiers.

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

Example 1 [Preparation of light-sensitive material] Preparation of silver halide emulsion Aqueous gelatin solution in stirring (1200 ml of water to 25 g of gelatin)
And 600 ml of an aqueous solution containing 117 g of potassium bromide in 3 g of sodium chloride and kept at 50 ° C.) and an aqueous solution of silver nitrate (600 ml of water in which 0.74 mol of silver nitrate were dissolved) were added simultaneously at the same flow rate over 45 minutes. did. Five minutes after this was completed, an aqueous solution containing 4.3 g of potassium iodide
200 ml was added at an equal flow rate over 5 minutes. After washing this emulsion with water and desalting, 24 g of gelatin was added and dissolved,
Further, 5 mg of sodium thiosulfate was added and chemically sensitized at 60 ° C. for 15 minutes to prepare a tetrahedral monodisperse silver halide emulsion having a yield of 1000 g.

Preparation of Photosensitive Microcapsule Dispersion Liquid 50 g of trimethylolpropane triacrylate, 0.4 g of the following copolymer, Pergasscript® I-6-B
(Ciba Geigy Dye Precursor) 5 g, the following hydrazine compound 3.9 g, the following reducing agent 3.7 g, Irgakiure I-
907 1 g and Irgakiure I-651 1 g (Irgakiure is a photopolymerization initiator manufactured by Ciba Geigy), 1 g of the following surfactant and 10 g of methylene chloride were dissolved to prepare an oily solution.

To the above solution, add 6 g of the above silver halide emulsion and potassium bromide.
Add 1.4g of 10% aqueous solution and use a homogenizer at 40 ℃.
The silver halide emulsion was emulsified in the above oil solution by stirring at 15,000 rpm for 5 minutes.

Next, 2.7 g of Takenate D110N (Isocyanate compound manufactured by Takeda Pharmaceutical Co., Ltd.) was dissolved in the above emulsion, and this was added to 125 g of a 10% aqueous solution of Versa TL-502 (polymer manufactured by National Starch Co., Ltd.), An oil / water emulsion was prepared by stirring with a homogenizer at 40 ° C and 9000 rpm for 30 seconds. While stirring this at 12000 rpm for 25 minutes, add melamine-formalin prepolymer (34.5 g of melamine and 57 g of formalin to 186 g of water, and add 600 ml / min at 60 ° C).
Add 36 g of the solution obtained by stirring for 30 minutes by rotation and adjust the pH.
After adjusting to 6.0 and stirring at 60 ℃ and 1200 rpm for 90 minutes, 16g of 40% aqueous solution of urea was added, pH was adjusted to 3.5 and stirred at 60 ℃ and 1000 rpm for 40 minutes to adjust pH. After adjusting to 7.0, a photosensitive microcapsule dispersion was prepared.

Preparation of photosensitive material To 30 g of the microcapsule dispersion described above, 7 g of a 10% aqueous solution of guanidine triacetic acid and 53 g of water were added, and the dispersion was dried on a polyethylene terephthalate film to a dry film thickness of about 10 μm.
A photosensitive material was prepared by coating and drying so as to have a thickness of m.

[Preparation of Image-Receiving Material] To 125 g of water, 11 g of 40% sodium hexametaphosphate aqueous solution was added, and further 34 g of 3,5-di-α-methylbenzylsalicylate zinc and 82 g of 55% calcium carbonate slurry were mixed,
Coarse-dispersed with a mixer. The liquid was dispersed with a Dynomill disperser, and 6 g of 50% styrene-butadiene rubber (SBR) latex and 55 g of 8% polyvinyl alcohol were added to 200 g of the obtained liquid and mixed uniformly. This mixed solution was uniformly applied onto an art paper having a weight of 43 g / m ² to give a wet film thickness of 30 μm, and then dried to prepare an image receiving material.

[Image formation] The light-sensitive material is imagewise exposed through a step wedge with a halogen lamp at an illuminance of 2000 lux for 1 second, then 140
The surface of the photosensitive layer of the photosensitive material was brought into close contact with a hot plate heated to 0 ° C. and heat development was performed for 5 seconds. Next, this was run at a speed of 20 mm per second while keeping a distance of 10 mm from a 15 W low-pressure mercury lamp (“Black Light” manufactured by Matsushita Electric Industrial Co., Ltd.), and ultraviolet rays were uniformly emitted through a slit with a width of 2 mm. After exposure (exposure time 0.1 seconds) and photodevelopment, the image receiving material was passed through a roller pressurized to 500 kg / cm ² , and a clear magenta color on the image receiving material was positive for the original. Image was formed.
The image had D (max) of 1.4 and D (min) of 0.1.

Comparative Example: In Example 1, the same procedure as in Example 1 was conducted except that the photosensitive material was developed for 5 seconds, and then was not photodeveloped. I only got a bad image of. (D (max)
= 1.4, D (min) = 0.9) When the time of heat development is extended, a good image can be obtained, but in order to obtain the same image as in Example 1 without photodevelopment, heat development is performed for 13 seconds. Was necessary.

Claims (10)

[Claims] 1. A silver halide, a polymerizable compound, a photopolymerization initiator, a color image-forming substance, and a silver halide which have a function as a developing agent and a function as a polymerization inhibitor. After developing and being oxidized by itself, microcapsules or oil droplets that together contain a reducing agent that loses or reduces its action as a polymerization inhibitor can be added to a photosensitive material provided on a support. This is imagewise exposed to form a latent image on silver halide, and then uniformly heated to develop the silver halide with a reducing agent and to oxidize the reducing agent in the area where the development has occurred. Then, at the same time or at the same time, by uniformly exposing with a light having a wavelength absorbed by the photopolymerization initiator, the polymerizable compound is photopolymerized in the portion where the development has occurred to cure the microcapsules or oil droplets, and And the image receiving material and dense To pressurized to transfer the components in microcapsules or oil droplets uncured to the image receiving material, the image forming method comprises forming a color image on the image receiving material. 2. The image forming method according to claim 1, wherein the light-sensitive material further contains a base or a base precursor which generates a base by heating. 3. The exposure amount of uniform exposure is an exposure amount for curing microcapsules or oil droplets in a portion having a high imagewise exposure amount, and curing the microcapsules or oil droplets in a portion not imagewise exposed. The image forming method according to claim (1), which is selected so that the exposure amount is not allowed. 4. The reducing agent is selected from aminophenols, sulfonamidophenols, sulfonamidonaphthols, 3-pyrazolidones, and hydrazines as reducing agents. Image forming method. 5. The content of the reducing agent is in the range of 0.03-3 mol per mol of silver halide, as claimed in claim 1.
Image forming method. 6. The image forming method according to claim 1, wherein the photopolymerization initiator is an aromatic ketone. 7. The content of the photopolymerization initiator is equal to that of the polymerizable compound.
The image forming method according to claim 1, which is in the range of 0.01 to 30% by weight. 8. The particle size of the microcapsules or oil droplets is 0.
The image forming method according to claim 1, which is in the range of 5 to 50 μm. 9. The image forming method according to claim 1, wherein the polymerizable compound is a compound having an ethylenically unsaturated group. 10. The image according to claim 1, wherein the color image-forming substance is selected from a dye, a pigment, or a color-forming agent capable of reacting with a developer to form a dye. Forming method.